/*
This file is part of the iText (R) project.
Copyright (c) 1998-2025 Apryse Group NV
Authors: Apryse Software.

This program is offered under a commercial and under the AGPL license.
For commercial licensing, contact us at https://itextpdf.com/sales.  For AGPL licensing, see below.

AGPL licensing:
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/
using System.Collections.Generic;
using iText.Commons.Utils;

namespace iText.Kernel.Pdf.Canvas.Parser.Listener {
//\cond DO_NOT_DOCUMENT
    internal class DefaultTextChunkLocationComparator : IComparer<ITextChunkLocation> {
        private bool leftToRight = true;

        public DefaultTextChunkLocationComparator()
            : this(true) {
        }

        public DefaultTextChunkLocationComparator(bool leftToRight) {
            this.leftToRight = leftToRight;
        }

        public virtual int Compare(ITextChunkLocation first, ITextChunkLocation second) {
            // not really needed, but just in case
            if (first == second) {
                return 0;
            }
            int result;
            result = JavaUtil.IntegerCompare(first.OrientationMagnitude(), second.OrientationMagnitude());
            if (result != 0) {
                return result;
            }
            int distPerpendicularDiff = first.DistPerpendicular() - second.DistPerpendicular();
            if (distPerpendicularDiff != 0) {
                return distPerpendicularDiff;
            }
            return leftToRight ? JavaUtil.FloatCompare(first.DistParallelStart(), second.DistParallelStart()) : -JavaUtil.FloatCompare
                (first.DistParallelEnd(), second.DistParallelEnd());
        }
    }
//\endcond
}
